Sir John Mandeville's probity remains unimpeached; for the accuracy of whatever he relates from his own personal observation has been confirmed by subsequent travellers. On his return to Europe he hastened to Rome to submit his book to the Pope, and to "his wise council," and "those learned men of all nations who dwell at that court." The volume was critically reviewed; and his holiness "ratified and confirmed my book in all points," by referring to an account in Latin: this account was probably written by some missionary; Rubriquis had been dispatched on an unsuccessful mission to Christianize the great Khan of Tartary in 1230; or it was the writings of Marco Polo, which could not be unknown at Rome. In that day all real information was consigned to the fugitive manuscript, partially known, and often subject to the interpolations and capricious alterations of its possessor, and what sometimes occurred, to the silent plagiarisms of other writers--of which even Mandeville himself has been suspected. The Pope decreed that not only all that Mandeville related was veracious, but that the Latin book which his holiness possessed contained _much more_, and from whence the Mappa Mundi had been made. Indeed Mandeville has himself told us that he wrote only from his recollections as they "would come into his mind;" these necessarily were often broken and obscure. Some "mervayles" remained unrecorded, and hereafter were to be "more plainly told;" but I fear these are lost for us. In this "true" book we find many things very untrue, but we may doubt whether any in that day were as positive in this opinion. The author himself designed no imposition on his readers; he tells us what he believed; part of which he had seen and the rest he had heard, and sometimes had transcribed from sources deemed by him authentic. Who can suspect the knight of spotless honour, and whose piety would not relinquish his _Ave-Marias_ for a dominion? Having fought during two years under the ensign of the Sultan of Egypt, and being offered in marriage the Sultan's daughter and a province, he refused both, when his Christianity was to be exchanged for Mahometanism.